1664882607 has 16 divisors (see below), whose sum is σ = 2353743360. Its totient is φ = 1043156352.

The previous prime is 1664882561. The next prime is 1664882617. The reversal of 1664882607 is 7062884661.

It is not a de Polignac number, because 1664882607 - 2¹⁰ = 1664881583 is a prime.

It is a super-2 number, since 2×1664882607² = 5543668190182232898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664882617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13968 + ... + 59370.

It is an arithmetic number, because the mean of its divisors is an integer number (147108960).

Almost surely, 2^1664882607 is an apocalyptic number.

1664882607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1664882607 is a deficient number, since it is larger than the sum of its proper divisors (688860753).

1664882607 is a wasteful number, since it uses less digits than its factorization.

1664882607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46142.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1664882607 is about 40802.9730166810. The cubic root of 1664882607 is about 1185.2079031330.

The spelling of 1664882607 in words is "one billion, six hundred sixty-four million, eight hundred eighty-two thousand, six hundred seven".